The BDL Project

Status of the project

The project aims to promote the Behaviour Description Language (BDL) as a back-bone formalism, linking together the dynamic views of the Unified Modeling Language (UML). The BDL project is part of the Reutel project, a joint project with Alcatel.

Researchers and postgraduate students contributing to BDL are members of the PAMPA and EP-ATR projects of IRISA.

BDL: A Behaviour Description Language

We introduce the definition of a language of distributed reactive objects, a Behaviour Description Language (BDL), as a unified medium for specifying, verifying, compiling and validating object-oriented, distributed reactive systems. One of the novelties in BDL is its seamless integration into the Unified Modeling Language approach (UML). BDL supports a description of objects interaction which respects both the functional architecture of system designs and the declarative style of diagram descriptions. This support is implemented by means of a partial-order theoretical framework. This framework allows to specify both the causality and the control models of object interactions independently of any hypothesis on the actual configuration of the system. Given the description of such a configuration, the use of BDL offers new perspectives for a flexible verification of systems by modeling them as an asynchronous network of synchronous components. It allows an optimized code generation by using compilation techniques developed for synchronous languages. It permits an accurate validation and test of applications by supporting the manipulation of both causal and control dependencies. BDL aims at maximizing the re-usability of high-level specifications while minimizing programming effort and test-case based validation of distributed systems.



BDL, a Language of Distributed Reactive Objects

J.-P. Talpin, A. Benveniste, B. Caillaud, C. Jard, Z. Bouziane, H. Canon, in proceedings of ISORC'98, The 1st IEEE International Symposium on Object-oriented Real-time Distributed Computing, Kyoto, Japan, 1998.

From synchrony to asynchrony

A. Benveniste, B. Caillaud, P. Le Guernic, in proceedings of CONCUR'99, Concurrency Theory, 10th International Conference, Eindhoven, The Netherlands, August 1999, LNCS 1664, Springer.


Slides of the presentation to CONCUR'99

Slides of the presentation to ISORC'98

Slides presented during the evaluation meeting of program 1c of INRIA, St Malo, France, 6-7 October 1998

Other Links

Maintained by Benoît Caillaud <>, updated $Date$, copyright IRISA